Body size and digestive system shape resource selection by ungulates: A cross-taxa test of the forage maturation hypothesis,Ecology Letters

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Body size and digestive system shape resource selection by ungulates: A cross-taxa test of the forage maturation hypothesis
Ecology Letters ( IF 7.6 ) Pub Date : 2021-07-26 , DOI: 10.1111/ele.13848
Saeideh Esmaeili ₁ , Brett R Jesmer _{2,

3,

4} , Shannon E Albeke ₅ , Ellen O Aikens ₁ , Kathryn A Schoenecker _{6,

7} , Sarah R B King ₇ , Briana Abrahms ₈ , Bayarbaatar Buuveibaatar ₉ , Jeffrey L Beck ₁₀ , Randall B Boone ₁₁ , Francesca Cagnacci ₁₂ , Simon Chamaillé-Jammes _{13,

14} , Buyanaa Chimeddorj ₁₅ , Paul C Cross ₁₆ , Nandintsetseg Dejid ₁₇ , Jagdag Enkhbyar ₁₈ , Ilya R Fischhoff ₁₉ , Adam T Ford ₂₀ , Kate Jenks ₂₁ , Mahmoud-Reza Hemami ₂₂ , Jacob D Hennig ₁₀ , Takehiko Y Ito _{23,

24} , Petra Kaczensky _{25,

26,

27} , Matthew J Kauffman _{1,

28} , John D C Linnell _{25,

27} , Badamjav Lkhagvasuren ₂₉ , John F McEvoy ₃₀ , Joerg Melzheimer ₃₁ , Jerod A Merkle ₁ , Thomas Mueller _{17,

32} , Jeff Muntifering _{21,

33} , Atle Mysterud ₃₄ , Kirk A Olson ₉ , Manuela Panzacchi ₃₅ , John C Payne _{9,

26} , Luca Pedrotti ₃₆ , Geir R Rauset ₃₅ , Daniel I Rubenstein ₃₇ , Hall Sawyer ₃₈ , John D Scasta ₁₀ , Johannes Signer ₃₉ , Melissa Songer ₃₀ , Jared A Stabach ₃₀ , Seth Stapleton ₂₁ , Olav Strand ₃₅ , Siva R Sundaresan ₄₀ , Dorj Usukhjargal ₁₈ , Ganbold Uuganbayar ₁₈ , John M Fryxell ₄₁ , Jacob R Goheen ₁

Affiliation

Department of Zoology and Physiology and Program in Ecology, University of Wyoming, Laramie, WY, USA.
Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, USA.
Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA.
Center for Biodiversity and Global Change, Yale University, New Haven, CT, USA.
Wyoming Geographic Information Science Center, University of Wyoming, Laramie, WY, USA.
US Geological Survey, Fort Collins Science Center, Fort Collins, CO, USA.
Natural Resource Ecology Laboratory, Warner College of Natural Resources, Colorado State University, Fort Collins, CO, USA.
Center for Ecosystem Sentinels, Department of Biology, University of Washington, Seattle, WA, USA.
Wildlife Conservation Society, Mongolia Program, Ulaanbaatar, Mongolia.
Department of Ecosystem Science and Management, University of Wyoming, Laramie, WY, USA.
Department of Ecosystem Science and Sustainability and the Natural Resources Ecology Laboratory, Colorado State University, Fort Collins, CO, USA.
Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy.
CEFE, Univ. Montpellier, CNRS, EPHE, IRD, Université Paul Valéry Montpellier 3, Montpellier, France.
Department of Zoology & Entomology, Mammal Research Institute, University of Pretoria, Pretoria, South Africa.
Mongolia Program Office, World Wide Fund for Nature, Ulaanbaatar, Mongolia.
U.S. Geological Survey, Northern Rocky Mountain Science Center, Bozeman, MT, USA.
Senckenberg Biodiversity and Climate Research Centre, Frankfurt (Main), Germany.
Hustai National Park Trust, Ulaanbaatar, Mongolia.
Cary Institute of Ecosystem Studies, Millbrook, NY, USA.
Department of Biology, University of British Columbia, Okanagan, BC, Canada.
Minnesota Zoo, Apple Valley, MN, USA.
Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran.
Arid Land Research Center, Tottori University, Tottori, Japan.
International Platform for Dryland Research and Education, Tottori University, Tottori, Japan.
Department of Terrestrial Biodiversity, Norwegian Institute for Nature Research, Trondheim, Norway.
Research Institute of Wildlife Ecology, University of Veterinary Sciences, Vienna, Austria.
Department of Forestry and Wildlife Management, Inland Norway University of Applied Sciences, Koppang, Norway.
U.S. Geological Survey, Wyoming Cooperative Fish and Wildlife Research Unit, Laramie, WY, USA.
Institute of General and Experimental Biology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia.
Conservation Ecology Center, Smithsonian National Zoo & Conservation Biology Institute, Front Royal, VA, USA.
Department of Evolutionary Ecology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany.
Department of Biological Sciences, Goethe University, Frankfurt (Main), Germany.
Namibia University of Science and Technology, Windhoek, Namibia.
Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Norway.
Department of Terrestrial ecology, Norwegian Institute for Nature Research, Trondheim, Norway.
Stelvio-Stilfserjoch National Park, Bormio, SO, Italy.
Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA.
Western Ecosystems Technology, Inc, Laramie, WY, USA.
Wildlife Sciences, Faculty of Forest and Forest Ecology, University of Goettingen, Göttingen, Germany.
Greater Yellowstone Coalition, Bozeman, MT, USA.
Department of Integrative Biology, University of Guelph, Guelph, ON, Canada.

The forage maturation hypothesis (FMH) states that energy intake for ungulates is maximised when forage biomass is at intermediate levels. Nevertheless, metabolic allometry and different digestive systems suggest that resource selection should vary across ungulate species. By combining GPS relocations with remotely sensed data on forage characteristics and surface water, we quantified the effect of body size and digestive system in determining movements of 30 populations of hindgut fermenters (equids) and ruminants across biomes. Selection for intermediate forage biomass was negatively related to body size, regardless of digestive system. Selection for proximity to surface water was stronger for equids relative to ruminants, regardless of body size. To be more generalisable, we suggest that the FMH explicitly incorporate contingencies in body size and digestive system, with small-bodied ruminants selecting more strongly for potential energy intake, and hindgut fermenters selecting more strongly for surface water.

中文翻译：

有蹄类动物的体型和消化系统形状资源选择：草料成熟假说的跨类群检验

草料成熟假说 (FMH) 指出，当草料生物量处于中等水平时，有蹄类动物的能量摄入量最大。尽管如此，代谢异速生长和不同的消化系统表明资源选择应该因有蹄类动物物种而异。通过将 GPS 重新定位与有关草料特征和地表水的遥感数据相结合，我们量化了体型和消化系统在确定 30 个后肠发酵罐（马科动物）和反刍动物跨生物群落的运动方面的影响。无论消化系统如何，中间草料生物量的选择与体型呈负相关。与反刍动物相比，马科动物对接近地表水的选择更强，无论体型如何。为了更概括，

更新日期：2021-09-09

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